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Abstract

In the article A High Speed Ferrite Storage System by C. J. Quartly, Electronic Engineering, December 1959, at page 756, there is described a word-oriented memory system employing two magnetic cores for each bit storage location. In the memory system shown the benefits of two core per bit storage are attained with less than two cores per storage location.

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United States

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English (United States)

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Word Oriented Memory

In the article A High Speed Ferrite Storage System by C. J. Quartly,
Electronic Engineering, December 1959, at page 756, there is described a word-
oriented memory system employing two magnetic cores for each bit storage
location. In the memory system shown the benefits of two core per bit storage
are attained with less than two cores per storage location.

Each column drive winding of the memory represents a different word
storage location. The row drive lines represent bit storage positions. A bit
storage core S is positioned at each row and column intersection. A common bit
sense line is serially coupled to all of the storage cores in each different row.
One reference core R is provided on each bit sense line. The cores R are
coupled to a drive line which forms a common return for all of the word drive
lines, but are not coupled to the bit drive lines.

A word is written in memory by energizing a selected word drive line to switch
all of the associated storage cores and the reference cores to some intermediate
point, for example, point r on their respective hysteresis loops. The bit drive lines
are energized coincidently with the selected word line in either of two opposite
directions, one direction to store a 1 and the opposite direction to store a 0. The
bit excitations aid or oppose the word excitation in several storage cores so that
they are driven to slightly higher or lower intermediate points on their hysteresis
loops to represent st...